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Investigation into the Effects of Textural Properties on Cuttability Performance of a Chisel Tool

机译：调查纹理性质对凿子工具可切割性性能的影响

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摘要

The main objective of this study is to investigate the effect of textural properties of stones on cutting performance of a standard chisel tool. Therewithal, the relationships between textural properties and cutting performance parameters and physical and mechanical properties were statistically analyzed. For this purpose, physical and mechanical property tests and mineralogical and petrographic analyses were carried out on eighteen natural stone samples, which can be grouped into three fundamentally different geological origins, i.e., metamorphic, igneous, and sedimentary. Then, texture coefficient analyses were performed on the samples. To determine the cuttability of the stones; the samples were cut with a portable linear cutting machine using a standard chisel tool at different depths of cut in unrelieved (non-interactive) cutting mode. The average and maximum forces (normal and cutting) and specific energy were measured, and the obtained values were correlated with texture coefficient, packing weighting, and grain size. With reference to the relation between depth of cut and cutting performance of the chisel tool for three types of natural stone groups, specific energy decreases with increasing depth of cut, and cutting forces increase in proportion to the depth of cut. The same is observed for the relationship between packing weighting and both of specific energy and cutter forces. On the other hand, specific energy and the forces decrease while grain size increases. Based on the findings of the present study, texture coefficient has strong correlation with specific energy. Generally, the lower depth of cut values in cutting tests shows higher and more reliable correlations with texture coefficient than the increased depth of cut. The results of cutting tests show also that, at a lower depth of cut (less than 1.5 mm), even stronger correlations can be observed between texture coefficient and cutting performance. Experimental studies indicate that cutting performance of chisel tools can be predicted based on texture coefficients of the natural stones.
机译：本研究的主要目的是探讨石材对标准凿工具切割性能的影响。在其外，统计分析了纹理性质和切割性能参数与物理和机械性能之间的关系。为此目的，在十八天然石样品上进行身体和机械性能测试和矿物学和岩化分析，可以将其分为三种根本不同的地质渊源，即变质，火成和沉积。然后，对样品进行纹理系数分析。确定石头的可切割性;使用便携式线性切割机使用便携式线性切割机，在不升级（非交互式）切割模式下的不同深度的标准凿子工具中切割。测量平均值和最大力（正常和切割）和特定能量，并且所获得的值与纹理系数，包装加权和晶粒尺寸相关。参考三​​种类型的天然石材组的凿子工具的切割和切割性能之间的关系，随着切割深度的增加，特定能量降低，切割力与切割深度成比例地增加。对于包装加权和特定能量和切割力的关系，观察到该相同。另一方面，特定能量和力减小，而粒径增加。基于本研究的发现，纹理系数与特定能量具有很强的相关性。通常，切割测试中的切割值的较低深度显示出与纹理系数的更高且更可靠的相关性，而不是增加的切割深度。切割试验结果也表明，在较低的切口深度（小于1.5mm），可以在纹理系数和切割性能之间观察到更强的相关性。实验研究表明，基于天然石材的纹理系数，可以预测凿子工具的切割性能。

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